Question

Tính hợp lý:   123456789-23456789+100

Answer 1

=100000000+100=100000100

Answer 2

123456789-23456789+100

=1,2-2,3-3,4-4,5-5,6-6,7-7,8-8,9-9

Answer 3

quen nha 

1,00000000+100

=100000000+100

100000100